Q: Why am I continuously encountering 401 authentication errors for Fulfilment Service API tables such as WFS_Inventory, Inbound_Shipment, and Inbound_Shipment_Details, while other tables are syncing without any authentication issues?

Ans: The 401 authentication errors for Fulfilment Service API tables (such as WFS_Inventory, Inbound_Shipment, and Inbound_Shipment_Details) are occurring because your account is not currently enrolled in Walmart Fulfillment Services (WFS). Since these APIs are specific to WFS, they will continue to return authentication errors until your account is successfully enrolled in the program. Other tables are working fine because they do not require WFS enrollment.

To resolve this issue, please complete the WFS onboarding and setup process using Walmart’s official resources. Once enrollment is completed, retry the API calls.

If the issue persists even after successful enrollment, you can reach out to support for further assistance.

WFS seller onboarding and setup
Walmart Fulfillment Services (WFS): Overview